#include "muduo/proto/dispatcher.h"
#include "muduo/proto/codec.h"


#include "muduo/base/Logging.h"
#include "muduo/base/Mutex.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpClient.h"
#include"muduo/net/EventLoopThread.h"
#include"muduo/base/CountDownLatch.h"

#include "request.pb.h"

#include<iostream>

class Client{
    public:
    typedef std::shared_ptr<sty::TranslateResponse> TranslateResponsePtr;
    typedef std::shared_ptr<sty::AddResponse> AddResponsePtr;
    typedef std::shared_ptr<google::protobuf::Message> MessagePtr;

    Client(const std::string &sip,int sport):_latch(1),_client(_loopthread.startLoop(),muduo::net::InetAddress(sip,sport),"Client"),
    _dispatcher(std::bind(&Client::onUnknownMessage, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3)),
    _codec(std::bind(&ProtobufDispatcher::onProtobufMessage, &_dispatcher, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3))
    {
        //注册业务请求处理函数
        _dispatcher.registerMessageCallback<sty::TranslateResponse>(std::bind(&Client::onTranslate, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
        _dispatcher.registerMessageCallback<sty::AddResponse>(std::bind(&Client::onAdd, this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
        _client.setMessageCallback(std::bind(&ProtobufCodec::onMessage,&_codec,std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
        _client.setConnectionCallback(std::bind(&Client::onConnection,this,std::placeholders::_1));         
    }


        //连接服务器，需要阻塞等待连接建立成功后再返回
    void connect()
    {
        std::cout<<"client connect"<<std::endl;
        _client.connect();
        _latch.wait();//阻塞等待直到连接建立成功
        std::cout<<"client connect end"<<std::endl;
    }
    void Translate(const std::string &msg)
    {
        std::cout<<"client Translate"<<std::endl;
        sty::TranslateRequest req;
        req.set_msg(msg);
        send(&req);
    }
    void Add(int num1,int num2)
    {
        std::cout<<"client ADD"<<std::endl;
        sty::AddRequest req;
        req.set_nums1(num1);
        req.set_nums2(num2);
        send(&req);

    }
    private:
    bool send(const google::protobuf::Message *message)
    {
        if(_conn->connected())//连接状态正常就发送
        {
            _codec.send(_conn,*message);
            return true;
        }
        return false;  
    }
    void onUnknownMessage(const muduo::net::TcpConnectionPtr &conn,const MessagePtr &message,muduo::Timestamp){
        LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
        conn->shutdown();
    }

    void onTranslate(const muduo::net::TcpConnectionPtr &conn,const TranslateResponsePtr &message,muduo::Timestamp)
    {
        std::cout<<"翻译结果："<<message->msg()<< std::endl;
    }
    void onAdd(const muduo::net::TcpConnectionPtr &conn,const AddResponsePtr &message,muduo::Timestamp)
    {
        std::cout<<"加法结果："<<message->result()<< std::endl;
    }


    void onConnection(const muduo::net::TcpConnectionPtr&conn){
        if (conn->connected()) {
            _latch.countDown();//唤醒主线程中的阻塞
            _conn = conn;
        }else {
            //连接关闭时的操作
            _conn.reset();
        }
    }
    private:
    muduo::CountDownLatch _latch;//实现同步
    muduo::net::EventLoopThread _loopthread;//异步循环处理线程，事件监控
    muduo::net::TcpConnectionPtr _conn;//客户端对应的句柄
    muduo::net::TcpClient _client;//客户端
    ProtobufDispatcher _dispatcher;//请求分发器
    ProtobufCodec _codec;//协议处理器
};

int main()
{
    Client client("127.0.0.1",8085);
    client.connect();
    client.Translate("Hello");
    client.Add(11,13);
    sleep(1);
    return 0;
}


